Hi Kolvir,
Welcome to this Forum :)
The modelling world has definitely changed a lot in the last 20 years.
Internet has provided a step change in the way customers can communicate, both with the manufacturers but more importantly with each other on Forums like this.
And the impact on the quality of the kits is remarkable!
If you are looking at 1/35 and under 20$ you might find that your choices are limited.
I would like to recommend Tamiya's 35285 Hetzer. Link and length tracks, not to complex palette, single style road wheels. Painting options all the way from one color monotone to ambush scheme complex.
But the price tag is in the 40$ range.
And...
Trumpeter have a nice range of modern stuff that is reasonably priced. Accuracy might be so-so sometimes but fit is OK and the finished kits usually look the part.
Zvezda have released a T-90 and a Tiger I that both come decently priced. The kits have some issues but build up OK.
Mini-art have some really nice stuff out there, instructions are sometimes a bit vague and attachment points are sometimes difficult to find but the enthusiasm of the team levees nothing to wish for.
Dragon, Hobby-Boss, Bronco, AFV, MENG...Google away and you will find what you are looking for :)
Very Best Regards
Johan