What is Reddit's opinion of Tripp Lite SRCASTER Rack Enclosure Cabinet Heavy Duty Mobile Rolling Caster Kit?

From 3.5 billion Reddit comments

They are sold as accessories. However, they are extremely expensive. Better find some some generic ones but I did not have the time to find some that fit the specs.

EDIT: Here they are

It is definitely unfortunate it does not come with casters, but fear not, TrippLite has some available for some more money. :)

https://www.amazon.com/Tripp-Lite-SRCASTER-Enclosure-Cabinet/dp/B001KUAQQC/ref=pd_bxgy_23_img_2?_encoding=UTF8&pd_rd_i=B001KUAQQC&pd_rd_r=FYD85P56CQHWTXX187QE&pd_rd_w=lNMgK&pd_rd_wg=DNxK4&psc=1&refRID=FYD85P56CQHWTXX187QE

EDIT: Unable to find casters on UK Amazon...