Troll_Whisperer said:
ils411 said:
Here is a simple example
Product A and Product B both sells 900 units per week.
Product A is sold in 3 stores while product B is sold in 6 stores.
Each store vary in distance from the warehouse or distribution center
Legend:
Near - requires only 14 days of on hand inventory since it is near and can be replenished easily
medium - requires 21 days of on hand inventory and is harder to replenish
Far - requires 28 days of on hand inventory and is very hard or costly to replensih hence more stocks are maintained to lessen total cost
| Product A |
|
|
|
|
| Store |
Weekly Sales |
Distance from DC |
Required Days of Inventory |
Required Inventory |
| 1 |
200 |
Far |
28 |
800 |
| 2 |
300 |
Medium |
21 |
900 |
| 3 |
400 |
Near |
14 |
800 |
| TOTAL |
900 |
|
63 |
2500 |
As you can see, total required inventory for a given week is 2500 units. Now take a look at Product B
| Product B |
|
|
|
|
| Store |
Weekly Sales |
Distance from DC |
Required Days of Inventory |
Required Inventory |
| 1 |
200 |
Near |
14 |
400 |
| 2 |
180 |
Near |
14 |
360 |
| 3 |
130 |
Far |
28 |
520 |
| 4 |
140 |
Medium |
21 |
420 |
| 5 |
100 |
Far |
28 |
400 |
| 6 |
150 |
Medium |
21 |
450 |
| TOTAL |
900 |
|
126 |
2550 |
The required inventory in a given week is 2550 units. 50 more than product A. 50 units isn't a lot but this is just an example. A very simple example. The only factor I considered here is distance from warehouse. There are more factors that can be considered such as delivery cost, holding cost, cost of money etc etc.
Though, I should point out that this is actually true for dry goods. For electronics, not so sure. But hey, its just an example. So yeah, I don't think that its a myth but is actually a real life scenario.
|
The problem is, for this table to be right, you must assume that Sony's extra markets are further away from the warehouse than the main ones, which is not necessarilly true. We don't know how distribution works for these areas (namely Middle East), but it's probably quite good.
Of course there are many factors involved, but without knowing these factors we cannot conclude that Sony must have a bigger stock just because it sells in more countries. Anything else would be speculation, and it may well be wrong. That is all I'm arguing.
|
We dont have to assume anything. Its fact. Not all stores are the same distance from a warehouse. And diferent stores with varying degree of distance from the warehouse will also have varying degree of sales.And my example just showed you how that worked.
As for factors.
1. carying cost - how much it cost a store/warehouse to maintain a certain amount of inentory. Carying cost involves possible sales of other items that could have occupied the space that this specific product is occupying. It also involves cost of money, which is the possible interest that the cost of money that is invested on the product could be earting if it were just diposited into banks. Utility expenses such as lighting, for frozen food it could mean chillers and the likes. Manpower, which can inlclude the number of people and the manhours they render to maintain these items and to ensure that they are stored properly also it can include the number of securtiy guards added to make sure that the products are't stolen.
2. Shipment cost - Shipment cost refers to the cost incured by Sony by shipping ps3s to different regions/countires/stores. Shipment cost can be broken down to the actual cost of shipping it via cargo ship, truck, plane and other delivery methods. It also includes custom tax and trade taxes required by the country/region that it is being shipped to, and for some countires/regions, there is also holding tax, and temporary storage fee, rental of space fees and other fees that customs may feel like charging.
3. Logistics cost - cost incured from warhouses and distribution centers which include truck rentals, manpower cost, storgage cost, holding cost etc etc
Now we then take all these factores into consideration and each store now determines how many they could sell and how many buffer stocks they should maintain. It call comes down to the fact that more stores = more buffer stocks needed = more stocks sticking in the pipeline.
And yes, I know this as fact as this is what is really happening. I have worked for 2 different supermarket chain and one food chain which is why i know this shit. And no, I was not a store manager nor was i some clerk or supervisor. I was actually the jackass wo gets to determine purchase quantity and inventory levels. What does that mean? I get to screw over storemangaers and area managers and go "hey budy, how many you nead? 5? yeah ima gona send you 10! why? coz i fucking said so so deal with it!?