I have one pair of size 42 La Sportiva Testarossa and one pair of size 42 Five Ten (5.10) Anasazi Moccasym. Both pairs were only used for a few indoor gym sessions before I realized I needed a larger size. They are in excellent shape with no rand wear and most of the sole rubber intact (see pictures). And most importantly: no smell!!

$70 for the Moccasyms (retail $125) and $90 for the Testarossas (retail $180), or both pairs for $150.