Interesting. What brand lenses were they? I get Essilor varifocal lenses from Costco opticians. The top spec, of the ones Costco carry anyway.
They were Shamir Freeform, which have now been absorbed into Essilor IIRC
ETA my first pair (pre-covid) were £39 with 'moderate quality' spring arm frames (my description) frames all in about -7 both eyes with +2.5 on the varifocal. Post -covid (IIRC I used them 4 years) my latest ones were £79 same 'spec' but there would be an additional charge if 'auto- darkening' (sorry I can't remember the term) was added, which was included in the cost pre-covid. So they have increased a bit in price (what hasn't) but still vastly less expensive than other suppliers. As always, service/result depends on the skills of the persons in store.