55+ magenta plus cost for 1-line, include 5g?

55.00 plus is total cost . when i had it it was one phone . additional phone 25.00 . i had one phone paid 55.00  -had two phones paid 80.00 . if they have a promotion including two lines most likely one line is still 55.00 - there is no reduction if you choose only one line/ phone.  55 plus is 55.00 . add on  lines 25.00 as far as i know .   simply look up TMOBILE 55 Plus on any internet search . thank you