Steam is running a sale until 7/9/2020 that is including some Alien and AvP games.
Aliens Colonial Marines Collection is $5.99 (was $29.99)
Aliens Isolation Collection is $12.49 (was $49.99)
Aliens versus Predator Classic 2000 is $1.24 (was $4.99)
Aliens VS Predator Collection is $4.79 (was $23.99)
The collection's seem to have all DLC included.
You can also get an extra $5 off if you buy $30 or more.