I'm not sure I understand that?
Budget charged you $19.95 to use one of their transponders? Plus tolls of course.
I just arrived last night, in So Fla, renting with
Alamo. I finally decided to buy my own transponder. It was $19.95 at Publix and I'll have it for next trips. I should have done it years ago when they came out with the small portable transponder. We're here for 10 days before we drive up to WDW.
Unfortunately I can't get the App, my cell phone is Canadian, and we don't have the US App Store. But it was easy. I activated on the phone, and can go on their web site to sign in and manage acct.
I put $30 in my acct. you don't have to have the auto refil. You can add money at any time.