I think you are right about what is happening with scale price and quality. More bang for the buck is getting standard. I've heard folks complain the cheap ones are catch as catch can, and you sometimes get a good one and sometimes one that drifts all over or doesn't repeat well. You can read the reviews on Midway to get some idea. But it used to be you had to pay $500 and get a Denver Instrument variant to get decent stability with 0.1 grain resolution. You could try an awful lot of the cheap ones for that kind of money.
I don't know how the $25 gem scale compares on stability and quality unit-to-unit at this point in time, but you want to keep the 20 gram (308.65 grains) limit in mind if you go to weighing bullets.
Brian Enos sells a battery powered
unit for $75 that has 1543.2 gr (100 gm) capacity, 0.1 gr resolution and is stable, can be programmed not to shut off automatically every couple of minutes to save batteries, and has a 20 year warranty (much better than the Denver Instruments unit). Enos told me on the phone that he'd never had a single return of that model. That point would put it high on my list of candidates.
Also, with any kind of scale, if you find a best load you want to be able to repeat, trim a little stainless wire to match it's weight. That way, if you ever doubt a scale, you can drop that weight on to get a reference reading that you know is the value of the charge weight you actually want.