I say start with Richard's Cobra ink, you can even start with a cheaper printer like the Epson WF 30. You can atleast get started equipment wise under $100.00. Take into consideration the size of the items you want to produce. Many will be under 11x14 so the smaller printer will suite you fine.
I've used the Sublijet ink with a CIS and mine clogged. You definitely don't want to let them sit, you have to print atleast once a week.
Consider volume of sublimation items you are going to produce. If its something you want to "try" I say go cheap, the sub inks also have a shorter lifespan and do expire, so if you don't print alot you might get stuck with a whole lot on expensive unusable ink. (Ask me how I know
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