1 spot is 0.15 btc
2 spots are 0.29btc
3 spots are 0.44btc
4 spots are 0.59 btc
Etc.
So if I buy 2 spots, 2 times I get out cheaper than buying 4 spots?
0.58<0.59
Why not just go with a structure like:
1 spot is 0.15 btc
2 spots are 0.29btc (0.145
BTC ea)
3 spots are 0.42btc (0.14
BTC ea)
4 spots are 0.54 btc (0.135
BTC ea)
with multiple spots actually rewarding people for buying in.