Just ordered a set for our Challenger 37TB and anxious to get them. I'll report back on delivery time and if they help with the stability once leveled as I've read in posts on this site and other sites.
There are two promo codes that popped up while I was reviewing their
site. Both are for $10 off (SnapSpring17 & NewPrime17).
Regular price for a set of 4 SnapPad XTRA is $104.95 less $10 promotion (net total $94.95) and free UPS Ground shipping.