TYT TH-UVF9: No Tri Band

I was just wondering around and thought I would check on the TYT TH-UVF9 that Radio-Mart was looking at modifying to be a tri-band radio. They've updated their page with the following:

"We managed to have had a prototype we were playing with that we managed "ok" results on the 1.2 band however it is not cost effective and we have found time consuming to offer this as an option and as I understand it if we sell a modified transceiver then it will itself need to be tested to see if it meets FCC approval so bottom line, sorry it does not seem worth it at this time."