MyDigitalSSD’s 480GB Bullet Proof 5 Eco M.2 is indeed available for $130 with the 240 and 120GB models also sporting attractive pricing.
The M.2 drive uses Toshiba TLC memory with decent overprovisioning, an eight channel Phison PS3110-S10C controller and an additional chip which The SSD Review believes is an 8GB SLC cache from Kingston.
The drive tops out the bandwidth of SATA 6Gbps in most tests, offering a very good value for your money. Even with the shorter lifespan of TLC there is a three year warranty which should cover you until your next upgrade.