The cheapest texture caps i think would be Massdrops PBTs.
Cheap ABS doubleshots that are "slick" would be the Tai Hao GB ones that are like $20.00 a set.
Well the ABS Tao Hao I got in this group buy were textured:
And not blank.
The ABS keycaps I got on my Filco MJ2 Ninja (front facing keys) also have a "rubberized" feel to them--definitely not slick.
I love how alcohol has gotten mixed in with the keyboards here...the only time this would be a good thing!
I just wanted to pop in here and give you all an update on my troubles with Ducky (and the keyboard that has been gone to RMA for 5 months). Yesterday I emailed Ducky corporate, explained the situation and that I had not been able to get a response from the tech, etc...This morning I woke up to an email explaining that they are in the process of replacing their North American tech and they were told he didn't have any more keyboards for repair, so obviously something has happened to mine and they would be happy to replace it. They asked for the switch type and LED color and said they would let me know if they still had an exact one to send me, if not they will work with me to correct the issue. I emailed them this morning, but of course, they are in Taiwan, so I probably won't here back until tomorrow, but this at least gives me a bit of hope!
Also, on the topic of mechanicals at work, I ended up purchasing a QF Pro with MX browns for work. I work in an insurance office, so noise would be a concern, so I did put o-rings on it before I brought it in, but now it has become my favorite keyboard. I have a Ducky Shine Zero at home (a replacement I bought for my Ducky Shine II while it was sent for RMA) which is MX blues. I love the blues at home, but for work I couldn't get away with it. I've never tried any other switches, so I can't comment on them, but I love both the MX Browns and MX Blues, just depends on the situation.
Glad to hear you finally got a response!
Hopefully they include something extra to make up for the gigantic hassle you dealt with.