a good brand that is not expensive
Choose one. Unfortunately good presses are expensive for
reasons. Those reasons include quality and durability.
Quality would be factors like how even is the temperature across the platen and how flat is the platen. Both are critical when doing sublimation.
Durability most often comes down to how long before the control electronics fail.
I have a cheapish Chinese press. The controller failed after a year of
very light use, as I was just getting started. I rigged up a "manual override" and eventually also an old-style thermostatic controller (no computer). I use this to cure screen printed garments, and for that it works okay. This winter I've been experimenting with garment sublimation, and for that this press really struggles, as sublimation is done at higher temperature, and this press has a hard time getting there, not to mentioning taking way too long to recover after a pressing. If I decide to move forward doing sublimation garments, I will be buying a Geo Knight.
I already have a Geo Knight DK3 mug press.
All that said, we
start where we start. If you need to start with the Wal*Mart press, then that's what you need to do. You may get a few months into this and decide that sublimation is not for you. Or six months from now you may be really busy, as well as tired of the shortcomings of your WM press, and ready to spend the $$$$ on a USA made Geo Knight, Hix, or Hotronix.
Most all brands, good and bad, make both clamshells and swingaways. As far as a recommendation for a cheap press ... I can only recommend that you look at it as an exploratory temporary press. And don't leave it plugged in when not in use.