hi since the user case cannot use "opporunity", can I do this way to track sales(sales, and sample orders)?

thru existing Product Object - add additional fields "as of date", " quanlity", "total cost", and a pick list shown "sample as Yes or No"

or if that's the usually how we do, can advise the proper way (in details)? Thanks to all...

I need to settle below User Case, can help kindly? Thanks!

"Once you are familiar with the basic salesforce.com concepts, please tackle the following project. These are only high level details, so feel free to make assumptions or ask questions. Don’t invest too much time into building it, for example don’t write any code. Utilize the native salesforce.com tools to create custom configurations and reports.
 
! Restriction !
Do not use the standard salesforce.com Opportunity object.
 
Business Case
I run an organization that sells 3 products, blue, red, and green gift boxes.  We are targeting stores in shopping malls to use our gift boxes for gift wrapping their merchandise.  Our sales people call and visit stores at the malls talking to store owners about our boxes.  To help the sales efforts, our sales people carry sample boxes that they distribute to store owners that show some interest. 
 
Problem
I need to be able to track my sales team’s efforts and determine which boxes are selling. In addition, samples are at a cost to my company so I need to track how many samples each sales person is giving out. 
 
Ultimately, I need to know what my sales folks are doing, which sample boxes they are giving out, and how they are building our customer base.  Can you help?
"

I need to settle below User Case, can help kindly? Thanks!

"Once you are familiar with the basic salesforce.com concepts, please tackle the following project. These are only high level details, so feel free to make assumptions or ask questions. Don’t invest too much time into building it, for example don’t write any code. Utilize the native salesforce.com tools to create custom configurations and reports.
 
! Restriction !
Do not use the standard salesforce.com Opportunity object.
 
Business Case
I run an organization that sells 3 products, blue, red, and green gift boxes.  We are targeting stores in shopping malls to use our gift boxes for gift wrapping their merchandise.  Our sales people call and visit stores at the malls talking to store owners about our boxes.  To help the sales efforts, our sales people carry sample boxes that they distribute to store owners that show some interest. 
 
Problem
I need to be able to track my sales team’s efforts and determine which boxes are selling. In addition, samples are at a cost to my company so I need to track how many samples each sales person is giving out. 
 
Ultimately, I need to know what my sales folks are doing, which sample boxes they are giving out, and how they are building our customer base.  Can you help?
"

I need to settle below User Case, can help kindly? Thanks!

"Once you are familiar with the basic salesforce.com concepts, please tackle the following project. These are only high level details, so feel free to make assumptions or ask questions. Don’t invest too much time into building it, for example don’t write any code. Utilize the native salesforce.com tools to create custom configurations and reports.
 
! Restriction !
Do not use the standard salesforce.com Opportunity object.
 
Business Case
I run an organization that sells 3 products, blue, red, and green gift boxes.  We are targeting stores in shopping malls to use our gift boxes for gift wrapping their merchandise.  Our sales people call and visit stores at the malls talking to store owners about our boxes.  To help the sales efforts, our sales people carry sample boxes that they distribute to store owners that show some interest. 
 
Problem
I need to be able to track my sales team’s efforts and determine which boxes are selling. In addition, samples are at a cost to my company so I need to track how many samples each sales person is giving out. 
 
Ultimately, I need to know what my sales folks are doing, which sample boxes they are giving out, and how they are building our customer base.  Can you help?
"