Number of entries is up to you based on what you think people will gamble. You can use 16 or 32 or a zillion. Its the prize value divided by amount of spots. I would expect my gamble would make sense to the marketplace. So current value of lot, plus a fraction premium for you troubles divided by the amount of spots. Otherwise i could go out and buy the same lot, offer spots at half price and still make an absolute killing. These raffles are done in the collectable section a lot and they usually follow that format.
yeah i saw that.... i figured that .1 per was too steep...
Maybe something like 0.01btc per entry,
and max. 20 entries.
and including worldwide shipping
note: this is my idea for one miner and psu -kit
hmm what about 32 entries @ .015 per each individual miner+psu (and yeah ww shipping incl)