I've tried the acrylic cans from Bunnings with no luck at all. Take forever to cure. Months before it looked like hardening enough that finger print's wouldn't indent it. I might have got a dud can or 2 but I will never use it again. The Supercheap one looks good.
I'd go with SM's suggestion re: Cabots Marine Grade Polyurethane. I've been doing some test pieces using this over stain and it's working well. It comes in satin as well... https://www.bunnings.com.au/bondall-...rosol_p1525120 The Cabots one Sonic suggested could be better again..