Horror Freight Titanium Mig 140---Seek Honest Assessment from the Pro's
You may want to check this out. Comes with the aluminum spool included. Also, you can weld with gas or flux core. Looks like it's on sale right now.
I have one and it works well. I know some guys dont like Eastwood products, but I outfitted my shop with their gear and I only had an issue with 1 thing, an orbital palm sander. So far everything is performing well, been about a year and a half.
Eastwood MIG 175 Aluminum Welder with Spool Gun