Expensive lingerie? Worth it?

My boyfriend said he loves me as I am and don’t need expensive lingerie and lace and all that for me to be sexy which is really sweet but I’m just obsessed with it all. I went shopping at Bras n Things the other day and absolutely fell in love with this set (especially the top) and it fit better then anything in my life and even the assistant was impressed.

The top is $70 AUD and the bottoms $30 so all up $100 which I just can’t make make myself pay... does anyone else spurge a little on lingerie and do y’all think it’s worth it? Especially because as a teen my job income isn’t the highest..