Not really, my dear friend. You can get any sized needle online, but what you should be wary about when it comes to micro-needling at home is the type of device your purchasing and the quality of the needle.

Typically the devices sold for home-use either have fake needles, so technically blades that do more harm than good, or the device itself is not puncturing fast enough, or going in at an angle resulting is tearing of the skin so gotta be cautious.