I got the T-105's locally for $135 plus $24 core charge each at a local golf cart business. May not hurt to look. They also offered a US Battery branded battery for $10 less, but I decided that the $20 want that big of a deal at the time given the reputation of Trojan.
I would have went with Costco or Sams Club for batteries had either had them in stock.
2016 Jayco Eagle HT 29.5BHDS (ordered 12/30/15, delivered 3/8/16)
2015 F-350 crew cab, short bed, 6.7L PSD, Pullrite Superglide 3300 hitch