One thing if they're quality pieces. For me quality is quantified by durability. Have seen that DNA chipped regulated devices do well.
My point though is they're regulated devices. Regulated devices ime, can and do turn to bricks. Rather stick with mechanical mods.
Yes, I do own about three regulated mods. Wary of using them. They mostly collect dust but sometimes I do use.
Not wholly against regulated, they just are not my preference due to seeing most not be durable. If a mechanical mod breaks, can usually do a little looking up, fix it in a little bit with some ease.
Regulated devices? I don't even want to try opening them for all the looking up, needing to buy extra whizzwigs & dodads. Not my way to cut a cake, float a boat.
And for the prices listed on these particular ones, no thanks. Can get 5, or so $30 kits of regulated variety to the cost of one of these. And $30-50 seems reasonable to me to pay on regulated devices.
Now, if they got platinum contacts or something really fancy going on for themselves, might pay $75 max. You're really going to need to sell it good though. Talk to
@MannyScoot about selling really good to frugal types like me.
He's got a knack for sweet talking folks.