I ordered custom tokens a few weeks ago and they should be here in about a week. It aint cheap since you have a minimum to order. If you use stock designs then it will be much cheaper since there is a much smaller minimum at most token manufacturers.
I'm going to start my own thread about this when I receive my tokens.
I will say this to you first. The size token that Flynn's used will NOT fit in some older games, mainly Midway's 80's games, without physically altering the slot. They are a bit bigger than a quarter and the slot was designed for a quarter. I went with .900 which is what Alladin's Castle used among others.
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On a side note I have 19 .882 token mechs available if anyone is interested...