Do you use glue or hairspray for ASA ? I could not manage warping without hairspray.
It looks like your corners separate from the border. I have this issue du to the new "smart" borders from Cura. It turns in the other direction for this to be easily removed... I have disabled this feature.
The last idea if everything fails : I had to change the geometry of the thing to prevent big long fat stripes like the bottom of your item. Making it an hexagonal grid may help to diffuse the forces. The shrinkage will be diffuse instead of along the stripe.
What matters :
You will be happy with this as a cheap starter printer around 200$.
After some time, you may want to print bigger things, faster, and with ABS/ASA for technical parts. Then you could invest in a bigger printer, faster, hot and with an enclosure for ABS fumes and warping issues. The budget for this is 600-1000$.