If the Dell G7 is unavailable, we recommend the very similar Dell G5 15 Gaming instead. It’s nearly identical to the G7, but the model we tested had a worse-looking screen with a greenish color tint, angled vents instead of rounded ones, and a red backlight on the keyboard instead of blue. Although we were able to test only the GTX 1050 Ti model, Dell confirmed to us that the G5 and G7 have identical thermal setups when configured with the same graphics card.
Dell Home, via its Member Purchase Program, offers its Dell 15.6" Laptop Gaming Backpack in Black/Red for $28.49 with free shipping. That's tied with our expired mention from four days ago as the lowest price we've seen for this bag. (It's the best deal we could find now by $20.) It accommodates laptops with up to 15.6" screens and features a shock-absorbent EVA molded front shield, adjustable shoulder straps, and a deployable rain cover.