I usually just sort it by "price low to high".
You'll see prices on cap and ball revolvers bouncing around from now until the 1st of the year. It's a bit frustrating because something that's usually $220 will be $200 now, $180 with free shipping at some other point, then $160 but without free shipping, then $170 without free shipping but they have a $20 off coupon.
Last couple of years I picked up
Griswold - $160
1851 steel .36 - $176
Uberti Wells Fargo - $280
Uberti Walker - $340
1860 steel - $180 but $20 off coupon but $17 shipping
1851 - the fake brass .44 one - $140 (!) with free shipping
1858 - I think I paid $180 but that was the year prior and it's fallen off the order history or something.