While peeking around on Amazon I saw a bunch of The Retro Collection figures for around $5-$8 - and I'd pretty much recommend them all at under $8. Boba Fett (Morak) is spectacular, but the super cheap $4.99 Fifth Brother Inquisitor is probably the best-engineered figure from Obi-Wan Kenobi. It'll make you old Kenner kids happy. And yes, these are affiliate links, it is possible we may get a few pennies if you click and buy something from Amazon.
Even a cheap Moff Gideon is arguably worth the asking price, just to swipe his Darksaber accessory.