It depends on the Tech recruiter. If you are going to contract through one of those companies, some scumbags will NOT give you the real billing rate, and thus have plenty of reasons to screw you. I have seen how a vendor might charge the same for three people, and then learn through other sources that those three people were getting paid differently by the vendor. A vendor can also ask for a rate increase, and just not tell your contractor a thing, and pocket the difference.
That space is full of very shady people, and that's before we get into immigration issues and foreigners. If you don't have the billing rate, and can confirm with the company that yes, that's the billing rate they are paying, beware.
I've been consulting for years now and I almost never know what the consulting firm bills for my time. It's irrelevant to me. My rate is already above the rate in my market. If someone lands me a gig and they have 100% markup, then good on them.
That space is full of very shady people, and that's before we get into immigration issues and foreigners. If you don't have the billing rate, and can confirm with the company that yes, that's the billing rate they are paying, beware.