Hi guys, thanks a lot for all the advices and for making me feel welcome.
I do have a budget problem: in the past 2 months I bought 2 basses (an acoustic Fender and a short scale Squier Jaguar) and I want to keep my marriage, ok?

So the deal is this: I’m a beginner and I don’t have “my” sound; I don’t not need volume sound as I live in an apartment, but I want to ear it thru the speaker also because I’m taking online lessons and I need to ear both the class and what I’m doing (an amp with only headphones isn’t enough).
I just eared about Ampeg brand and a brand new BA108 costs 130€ against 90€ of a Fender Rumble 15 witch is almost 40% more; is it 40% better?
In second had I probably get less options than anyone in the States or the UK but in the used market around Lisbon I find an old looking Peavey 20W Microbass for 50€ (looks like an old Peavey logo).
For 60€ I can get an old generation Fender Rumble 15, a Fame 30B, an old Laney Linebacker 30 and a Stagg 60 BA.
For 90€ I can get a new Rumble 15 so I wonder if makes sense to save 30€ and get an used less known brand.
Above that (and above my budget) I could try the mentioned new Ampeg BA 108 but there’s also a Roland Cube 30W for 125€ and a Marshall MB30 for 150€.
A could try to make an offer on one of those to see if they are available to negotiate for a lower price but are they that much better to be worth more 50% investment?
I think I already read reviews in here about all these models and if money wasn’t a problem, I know what I would get but for a beginner who will only play in his living room, does it make that much of a difference or am I just being silly?