You have pretty much no overhead costs except for the cost of the wire and beads so you could make a hell of a lot of money from these sculptures. I have a marketing idea.
You could make special orders or just make a 'standard sculpture' such as an Oscar or Parrot, then every month have a thread titled 'Death Pony Sculptures - 3rd Release' for example. Sell the special orders then the rest place upon the board like a sales sheet with the prices, sizes and pictures. If you made 6 a week, that could be anywhere from $200-$600 a month in profit.
How much would posting be on large (2ft+) sculpture?