Inexpensive integrated tube amp recommendations?

How about an SP3 Onix. I sure like mine and I saw one for 450 or so just the other day here on Agon. That would leave room for tube rolling.

Second vote for the SP-3. It was my first foray into tubes and is a excellent performer. It listed for about $1200.00 and can be had used for under $500.00. The stock tubes aren't bad, but it can be improved with NOS tubes.

It has some drawbacks. No remote and only two inputs. If you can live with that, you won't be disappointed.

Audio Space AS-3i might go for around your figure used.

Point-to-point, three inputs, the output power you want plus the ability to switch to triode mode from the front panel.