Your search for "WS-C3850-24S" revealed the following:
Cisco WS-C3850-24S-S Catalyst 3850 24x 1GB SFP 1x Expansion Module Slot Switch
SKU: NSH-2159
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 409.99
• Only 2 remaining
Call if you need more
Cisco PWR-C1-350WAC 350W AC Power Supply for Catalyst 9300, 3850, 3650
SKU: NSB-4176
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 42.99
• 29 in stock
Call if you need more
Cisco WS-C3850-24S-E Catalyst 3850 24x 1GB SFP 1x Free Module Slot Switch
SKU: NSH-2291
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 484.99
• Only 2 remaining
Call if you need more
NEW Cisco WS-C3850-24S-S Catalyst 3850 24x 1GB SFP 1x Module Slot Switch
SKU: NSN-1787
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco WS-C3850-24S-E 24x 1GB SFP 1x Module Slot Switch
SKU: NSN-1786
Condition: New
Shipping: Overnight Options
Warranty: 365 days