I've been in the boating business for over 30 years. The pandemic has led to a sharp increase in prices for local providers. I bought 20 pairs of 22" and 10 pairs of 18". Although the slide that attaches to the drawer itself is a bit lighter than the others, it works great. The lack of mounting screws wasn't a problem as local vendors don't have screws either. The only time you'll get drawer slide screws is if you buy from the big stores and pay $20 for a pair compared to the $8.90 I paid here. The most important thing is to make 100% sure that the boxes are the right size. Too big or too narrow and the guides will NOT work properly. These guides are excellent value for money and I will be using them in the future.