You might look at the Yulong Crystal DA DAC/Amp
Yulong's D100 and U100 are pretty well regarded - albeit pricier than your budget. This is a bit above your stated price, with shipping. But you might be able to find a pre-loved one.
Likewise the B version of the Audio-GD Sparrow - a touch above your budget, but the boost in sound quality from either of these manufacturers is pretty groovy.
Finally, I'm a big fan of the Hifiman EF2A Tube amp and DAC. Also slightly above your price, but cheaper shipping (via Amazon). This may not be the best performing amp/dac out there - but it does sound great, and is a LOT of fun. And a good entry to tube rolling, if you ever want to really geek out.
Used versions of all of these can be found (sometimes on the for sale/trade forum here) and might bring them within your stated budget.