CRAZY KAZEMDE'S USED CARTS!
The Expeditionary - 1100g
Surplus from a batch of supply carts commissioned as part of the Sirdar’s reforms.  High-sided with armored fighting slits. Exterior gear attachment points with reinforced hide bags and fittings. Ammunition not included.
equipment racks - handheld items in cart may be retrieved by adjacent characters as a bonus action
ironclad - cart provides ¾ cover to occupants
folding ballista - deploys in 1 minute, 1 action to load, 1 action to fire, 2d12 piercing, 200/480ft

10x15
2 horses

The Mountain Keep Reborn - 600g
An eccentric cartwright offered to rebuild the old cart after hearing the travelers’ tale.  New fittings crafted from soldatacier, wheels shod with brass plates, surfaces carved with narrative of travels, polished, and laminated.
easy takedown - reduces in 1 minute to a 200 pound flat 10x10 square or 5x5x5 cube for transport
sturdy - takes half damage from all sources
handy - user has advantage on animal handling or other checks to control cart

10x10
1 horse

The Lamplight - 1350g
Wedding gift for a dynast that’s being sold to finance repairs to their estate.  Gold and lapis inlays, faience bead curtains, fragrant sandalwood and cedar construction, silk cushions and comfortable seats in enclosed cabin.  Multiple enchanted lanterns provide beautiful illumination.
familiar lanterns - free resummons of familiars in special lanterns, familiars ignore range limitations when in lanterns
iaret decadence - unseen servant available 3 hours per day, taking a short rest or longer in the cart casts prestidigitate to clean the occupants
blessings of the gods - occupants have advantage on wisdom or charisma saving throws, selected daily

10x10
1 horse

The Crossing - 800g
Built for a band of explorers traveling beyond Kheprikel, but they couldn’t lower it down from the Shield of Painted Earth, so they left it behind. They never came back.  Lightweight but strong wooden construction, sides fold to provide cover, shelter, or room for oversize loads.
elemental suspension - cart is not penalized by difficult terrain and maintains travel speed on unimproved roads
lifted bed and folding skirts - a standard action lifts cart to 5 feet of ground clearance, providing a ½ cover fighting platform, or room to comfortably camp underneath
grapple gear - includes four spools of 200ft rope with tackle intended to lift or lower cart. May be used as a grapple point to provide advantage on climb checks

10x10
2 horses

The Tramp Freighter - 1200g
Cargo-hauler for a jungle route that included a stretch of river.  Open bed accepts all sizes of load. Well-used and broken-in, only a slight hum from the enchantments (may keep away biting insects).  Poles and oars included as well as floats for large or smaller pack animals.
waterproof - cart floats and may be used as a boat
cargo assist - incorporated floating disks reduce load by 2000 pounds
preservative effect - perishable items in cart last twice as long

10x20
2 horses