Well, I'm talking about EVERY shops of detergtents, not dealers or special situations etc... and of course Made in Italy products and not places where you can on occasion find dryer sheets.... many italian dealers of american machines have them on sale as well, they get them from USA and then sell them here as a "news", you couldn't findn till now a packet of dryer sheets wrote in italian or Made in Italy, this is what I mean, also, who sell these imported dryer sheets sell them for a LOT of money because of shipping costs....
How much your father sell them for?
I've seen them on internet, one speed queen delaer who have those is named Ventaria.....sell a 100 sheets box of Arm&hammer regular and not moist ones for 14 euros! A LOT!
About clogging, we use dryer sheets since ever in my family, I'm 23 and never had problems of vent or dryer clogged as many people say, we have a very long venting hose also and still going strong after more than 20 years, we just cleaned it once with a leaf blower in the 1999, many laundromats in US with commercial machines sell them too in vending sizes, they regularly sell and use them almost everywhere and I cannot undesrtand your speech about commercial machines, dryers are dryers, commercial or not is the same thing...or not? I never heard of big problems using them as some tecnician say,and of course never had problems with waxy laundry as you say, it all depends by product you use.
I experienced this just once with a crappy brand of dryer sheets named "breezy" that I purchased on internet because of an interesting price, well, they didn't work and let my laundry full of oily spots,who knows what the hell they did put in them, it looked candle wax, really! They claimed being made in USA, I bet they were relly made in China! Anyway they did everything but soft my laundry, just left it full of creases, static cling and oily spots everywhere.....we got them to grabage after 2 uses...
I personally love dryer sheets and found them more easy, convenient and also effective of some liquid softeners......
We always used Snuggle and Bounce, I found very good also the Kirkland ones and Gain and Downy sheets.....
They sell dryers sheets in France, UK, Germany and Spain but the best ones are americans, just curious to give a try to these italian ones, they look and smell nice.
I tried some europeans too, I recall the french brand "Soupline" or the Dutch one "Robjin" same of american "Snuggle" and italian "Coccolino", and also the English ones named "Lenor" wich are made in Canada probably in the same factory where some Bounce are, but I find Bounce more effective than Lenor anyway for some reasons....
I think I will continue buying american dryer sheets though.....