Well, there are many places from which to buy your towels. There are many factors in what is better quality such as material...thread counts, weight per sq. meter, edging, etc. There are guys that like low knit and some prefer plush and shag carpet like towels. Some like to pay $$$$ for a towel, while others pay less- depends on source. China and Korea are the main producers and some China plants use threads from Korea. Some use German machines and some do not. Some split the fibers...most do, and some do not (won't absorb worth %$#@ if it's not split).
There are blends as well to take into account...polyester vs. polymide.
When I first started, I was shocked at the prices because I was seeing towels being brought in for under a dollar, but being sold for over 7. A good example: 2 suede bonnets for the Cyclo on one site costs $8.75 per set. Now, maybe this is not supposed to be shared, but I KNOW that a set, with some packaging, can be produced for about 49 cents! Therefore, you can buy a set for about $4.00 on some sites, which might be seen as normal. However, $7? Same with ww towels for drying...up to $24 when you can buy for under $8 the same material and size? Not sure how that all works out, but I guess as some will say, some people just like to spend more money.
In our own experience, it comes down to finding a source and if the customer service is solid, then it's a win-win.
That said, one of my detail buddies...a very high end one that you all respect, uses Costco towels on every detail. He will walk into Costco and tell the employee, "I want that pallet of towels." They work for him and he does very well. Another detailer in our same network group buys some for $10 for the same purpose. What is it all about? It's not what this guy and that guy use, it's not what is the best brand, or what is the difference. It comes down to personal preference and what you are willing to pay for the value of the towel.
(Getting down off the soapbox and back to my day job)
Rob