Hi and welcome. I would probably avoid a mech for the Crown, unless you have the RBA deck. Mechs really need the ability to adjust the coil value. A regulated device works much better with fixed value coil heads. Frankly, the cost difference is only about 15 bucks or so. Bear in mind, with a mech you need two batteries minimum, plus an external charger, plus the mech itself. You can get a clone Nemesis from Fasttech for 10 or 15 bucks, if you don't mind waiting 3 weeks for it to get here, but quality batteries from a reputable dealer will be 5-7 bucks each, and a decent basic charger 10-15. All of that will be more at your local store. OTOH, 101vape (the only place I looked) has the Sigelei 50 V2 for 25, and the Cloupor Mini Plus with TC, to make full use of your Crown, for 30. Both are 50 watt, one battery mods, giving you more power safer than a one battery mech (that .25 Kanthal coil on a Nemesis would scare me, and the .5 would only make 35 watts), and both feature onboard charging and pass through. I don't recommend either, but it would get you by temporarily, allowing you to postone buying a second battery and a charger until later, while still avoiding being unable to vape a mech if your only battery is on the charger. Just a thought. $35-40 isn't a lot more money than a vape pen kit...