Allow to change default grading cost for "grading recommendations"

When using the grading recommendation tab it seems to be skewed to $25. My grading is half of that and it really doesnt allow the grading recommendation feature to be useful. Sometimes there are plenty of cards worth grading but the $25 makes it look like its not worth grading. I'd just show which cards have most arbitrage between grading levels or allow for input of the grading cost default price.