| OTC or prescription | OTC | OTC | OTC | Prescription | Prescription | Prescription |
| Models | Enhance Plus, Enhance Pro, Enhance Select 50, Enhance Select 100, Enhance Select 300 | B2 | Wave, Spirit, Omni | All models except Lyric | All models | All models except Silk X |
| Starting price per pair | $799, $1,699, $1,195, $1,495, $1,795 | $999 | $1,398, $1,398, $2,398 | $3,245 | $2,500 | $1,540 |
