What’s fair.

I bought a pallet of copper from a scrap yard included in the pallet was a 10' long brass  sheet. I remember paying $200 for it.  
 I used it all on my house for flashing etc. kept the little scraps. And when I sold the scraps the price of "clean copper" had gone through the roof ( China was building the 3 gorges dam ). and my box of scraps returned more than I originally paid.  
       I want to make a pair of brass megaphones.  To hang off the back end. 
       So how do I price my sheet of brass?   
    1. Currant Scrap copper prices? 
    2.  Currant Brass prices? 
    3. Price I originally paid divided by the amount I use,  minus what I sold the scrap copper for?  
   4. Something else?  
   5. I can leave them on for practice and unbolt them for the actual race times. 

Personally, id go actual brass scrap price at this time. 

Or leave them off for the race

Rules state that if you don't have a receipt for something you must FMV it.

In reply to Stampie :

Fair enough , I'll leave them on 'cause the FMV of scrap Brass can't be more than a dollar or two. 

Probably better to just fmv as scrap than to put $200 in budget and then take the $200 recoup hit anyway.

In reply to Robbie (Forum Supporter) :

Robbie.  
the copper I bought was used on the house.  This Brass was left over from that. So I don't have any money in the brass sheet.  It's just a piece of brass and probably only a dollar or two at todays scrap prices.  Should I look it up now. Or wait until the guys go to the challenge?