Comparing apples to apples the T8 will probably be about the same cost with shipping.
But the real question is, is the RB what you want? It seems that it only comes with drop down acrylic doors. At least with AP you can get glass, and for the same amount. So is the RB what you want, or are settling due to the time wait with AP?
I have drop down, swing out, and sliding glass. They all have their benefits, but at the end of the day I’ll take glass, even if it costs more.
A25 on left, Boaphile 6 ft on top right, 3 T25’s on bottom right.
BTW, someone did a nice write up on the RB. You may want to do a search.