Tube amps under $7500

Rogue ST-100 is an excellent amplifier and should work great. 

@hickamore look on a used market. The ST-100 is around $2,000. 
Audio Research would be another recommendation. 
In any case, consider a matching preamp for synergy if possible. 

I did it several times on the ST-100 when I had it and it’s super easy to do. Bias meter is built into the amp. Screwdriver is inside the amp as well. Flip the switch on each tube to “bias”, use screwdriver to turn the pot and look at the meter to align the needle on the proper value. 
It takes under 15min to bias those tubes including removing and replacing the cover.

Biggest reason to avoid tube amps, at least in my case…

1. relatively short life of power tubes (around 2000hrs)

2. cost of maintenance

3. tube rolling - too many choices, aggravates OCD

4. every noise the system makes - tubes are first to get blamed

5. every listening session that results in less than satisfactory experience - tubes are the first in line of usual suspects

With that said, I thoroughly enjoyed my time with the ST-100. It’s a great sounding amp. Very quiet, resolving and dynamic. However I am done with tubes for time being. 

I agree with @ghdprentice ARC and VAC are higher end solutions than the Rogue. That’s 100%. Primaluna and Rogue don’t play in the same league with the big boys
Whatever you plan on getting - price the replacement tubes and make sure you are committed to it. The ARC Ref 160s is an amazing amplifier. Definitely on my radar when I get back into tubes(if ever). It has 8 KT150 power tubes though that go for about $150 each at Upscale and most likely more if you buy direct from ARC.

Go for that VT80SE. Worth a shot.