| Sentry Right Leg Hydraulic Frame | 1 | 73 | 73 |
| Sentry Right Leg Merciless Spiked Plate | 1 | 68 | 68 |
| Sentry Right Leg Primal Plate | 1 | 62 | 62 |
| Sentry Right Leg Primal Storage Plate | 1 | 61 | 61 |
| Sentry Right Leg Savage Serrated Plate | 1 | 66 | 66 |
| Sentry Right Leg Sinister Plate | 1 | 65 | 65 |
| Sentry Right Leg Space Armor | 1 | 59 | 59 |
| Sentry Right Leg Storage Factory Armor | 1 | 59 | 59 |
| Sentry Right Leg Voltaic Frame | 1 | 72 | 72 |
| Sentry Right Leg Warmonger Staggering Plate | 1 | 69 | 69 |
| Sentry Right Missile Launcher | 1 | 74 | 74 |
| Sentry Space Legs | 1 | 60 | 60 |
| Sentry Space Monkey Helm | 1 | 70 | 70 |
| Sentry Torso | 1 | 60 | 60 |
| Sentry Torso Left Shoulder Laucher | 1 | 68 | 68 |
| Sentry Torso Left Shoulder Unstable Fat Man Launcher | 1 | 86 | 86 |
| Sentry Torso Left Unstable Gas Launcher | 1 | 80 | 80 |
| Sentry Torso Right Shoulder Laucher | 1 | 68 | 68 |
| Sentry Torso Right Shoulder Unstable Fat Man Launcher | 1 | 86 | 86 |
| Sentry Torso Right Unstable Gas Launcher | 1 | 80 | 80 |
| SERAPH Virus Source Code | 0 | 0 | |
| Sergeant Mr. Fuzzy Plushie | 0.01 | 0 | 0 |
| Serrated Blade Knife Mod | 1 | 25 | 25 |
| Serrated Blade Machete Mod | 1 | 51 | 51 |
| Serrated Blade Revolutionary Sword Mod | 1 | 51 | 51 |
| Serrated Blade Switchblade Mod | 1 | 25 | 25 |
| Serum Alpha | 0 | 0 | |
| Serum Beta | 0 | 0 | |
| Serum Experiment Control | 0 | 0 | |
| Serum Omega | 0 | 0 | |
| Serum Vial | 0 | 0 | |
| Serum Z | 0 | 0 | |
| Seven Ball | 0.4 | 2 | 5 |
| Shadeless Lamp | 3 | 10 | 3.3 |
| Shadeless Table Lamp | 3 | 10 | 3.3 |
| Shadeless Table Lamp | 3 | 10 | 3.3 |
| Shadow Alotolotl Plushie | 0.01 | 0 | 0 |
| Shadow Axolotl Flair | 0.01 | 0 | 0 |
| Shaped Charge | 1 | 1 | 1 |
| Shark Tooth Flair | 0.01 | 0 | 0 |
| Sharp | 0 | 0 | |
| Sharp Commie Whacker Mod | 1 | 25 | 25 |
| Sharp Heavy Sledgehammer Mod | 1 | 25 | 25 |
| Sharp Knuckles Mod | 1 | 25 | 25 |
| Sharp Knuckles Mod | 1 | 25 | 25 |
| Sharp Paddle Ball | 1 | 25 | 25 |
| Sharp Pool Cue Mod | 1 | 25 | 25 |
| Sharp Rolling Pin Mod | 1 | 25 | 25 |
| Sharp Tire Iron Mod | 1 | 25 | 25 |
| Sheepsquatch Bait | 0 | 0 | |