All I could suggest is making what they are paying worth it - I charge $75 for a full set or $45 for an infill. If it's your first time!
At their first visit, each of my clients receives their own ziploc bag with their files, orange woodstick and a small spray bottle of sanitizer. It costs me less than ten dollars. (the hook) I also tell them that their service includes a complimentray manicure, and I always finish with a hand and arm massage (the line).
It only adds about five minutes to your time, but here's the sinker - tell your clients that when they return to you, they'll get $10 off their service price for bringing back their sterile files. Otherwise, they'll have to pay full price to receive new ones.
At first, people will be like - What? I could go to a chop-chop-shop for less. Yes. But they know full well that feeling when they are getting their nails shaped with a grinder, and the last client walks up and says "Ooh, I still have a sharp edge just there" and the asian tech uses the grinder in his hand to smooth her nail, then goes right back on filing their nails!!!
This is a fabulous way of making your clients keepers. I also specialise in acrylic embeds - glitter, shell, flowers, you name it! They can be bought cheaply, stored in tiny jars that can be displayed neatly without risk of contamination.
My two pieces of advice where this is concerned? Checkout glamlabel (an ebay seller; click on advanced search, then items by seller) and youtube for this: "dual system forms" - once you work them out, you won't know how you did without them! You can do a full set of french or coloured tips with your existing gel or acrylic product in UNDER ONE HOUR without reducing your price and without reducing the quality.
There is money to be made in this industry WITHOUT cutting corners and WITHOUT risking cross-contaminations. What I can't figure is - if the asians sell time-saving, contamination reducing products on ebay, why aren't they using them in the chop-chop-shops?