I'm happy using generic FJM bags (from Amazon) 5 for $10!
I just love my two Miele cannister vacuums they're great. We live on all tile floors with 10 dogs and a few cats so everyday I vacuum up a ton of animal hair and I go through vacuum bags quite frequently. I'm not paying $19 for four bags that's ridiculous! I e-mailed Miele they told me about how much better filtration the new bags afforded. I explained that filtration quality means nothing when cleaning very coarse animal hair. I'm not living in a "clean Room" at Intel!
I noticed that Bosch has also raised their cannister bag prices so maybe it's a German thing. I started buying generic "FJM" 5 bags for $10 from Amazon which work just fine. These cheap bags have a cardboard connection at top instead of plastic but doesn't matter. So I'm happy now. I'm not paying $5 per Miele bag! Miele Style FJM Canister Vacuum Bags Microfiltration with Closure - 5/2 PackMore detail ...
