That's a lot of nebs - no wonder you do once a day. It takes 8-12 minutes to neb the 4 ml saline with the Pari Vios, about 6-7 min to do 2.5 ml levalbuterol (my specified dose).
I got my first one from the respiratory department of our clinic when the kids were small and it lasted over 20 years. I got the current one about 8 years ago at Walgreens pharmacy, right off the shelf with an Rx so insurance would pay part, but even full-priced on line they are around $50 from a number of nebulizer suppliers. Be sure to order the reuseable cup if it isn't included, and throw the disposable one in the cupboard as a backup. I load one with saline, the other with levalbuterol so I don't have to stop and rinse in between.
I have worn out one Innova and gave another away to my daughter who only needs it occasionally because it took 15-20 min for each neb.
Sue