I think that the current value code in The Chip Rack is LOW. Over the past few years I've seen 7 and 8 sales of the two chips. The yellow tails went for between $325 and $800. The red tails went for $400 to $600.

I'd put the retail for these in the $500 to $700 area... a "W" value in TCR, at least until I see evidence of any coming out.