What is a fully converted MAK 90 spiker worth? I recently purchased 2 MAK 90s in near mint condition for $500 each. I came across pre-ban furnature for $70 a set. So currently i have $570 invested in each. Is it worth putting a spike on one of them for $250. can I get my money back if i ever sell it? I converted a Saiga last week and I have $900 invested. I dont think I will get my money back out of the Saiga.