As I posted in another thread (yesterday?),
I'm using this one to do 12 eggs at a time, it fits my Pekin duck eggs just fine, the timer/count down can be reset for a differing number of days (convenient), its run non-stop since November w/o issue, the temp is quite good, and the humidity control is the same as any other of the same design (which is to say, "so so" at best). I dry incubate, in an RV (so my humidity changes thru the day based on outside conditions), no manual humidity adjustment system would work for me.
Paid $85 for mine, its now up to $94 on Amazon, but it is in budget, and will work for you.
https://www.backyardchickens.com/threads/i-need-help-picking-out-an-incubator.1463207/post-24374352
My Duck hatch rates are 50/50 right now, while my Chick hatch rates at 85% (counting all eggs in the incubator, even those that later proved unfertile). We've had multiple power losses (I did mention I'm living in an RV?) on every hatching thus far - from minutes to hours in duration. Full disclosure.