In a move that will shock no one, T-Mobile quietly lowered the prices of its existing iPhone hardware last week. The iPhone 5 dropped from $149.99 and 24 monthly payments of $21 to $99 down and 24 monthly payments of $18.75 per month. That’s a $100 price drop to a total cost of $549 for the 16GB iPhone 5 variant. The pricing on the 32GB and 64GB models also drop $100 as well overall. The drop in pricing is likely a move by T-Mobile to quickly reduce inventory and make way for the iPhone 5c and iPhone 5s, launching on September 20th.

The iPhone 4 and iPhone 4s were originally available in areas T-Mobile had existing HSPA+ service on the 1900PCS band. Neither device received the prominent placement the iPhone 5 did in T-Mobile stores, and I wouldn’t be surprised if T-Mobile dropped the price a little more if inventory doesn’t move fast enough to get these out of the door.

T-Mobile will launch the iPhone 5c and iPhone 5s in both 16GB, 32GB and 64GB flavors this Friday. The iPhone 5c will cost $0 down and 24 monthly payments of $22 per month for a total of $528 over two years. The iPhone 5s will arrive at $99 down and 24 monthly payments of $22.91 per month for a total cost of $648.84 for the 16GB variant.