Sports gear is rarely fragile and frequently awkward, which makes this a pricing question rather than a packing one.
Length is the trap
Couriers price on length as well as weight, and bats, racket bags, hockey sticks and barbell bars are long enough to attract a surcharge or a refusal. The rules differ by carrier and service.
Check before you quote. The difference comes off your own balance. How delivery is charged.
Weight is the other trap
Gym equipment is heavy, and a heavy parcel in a weak box fails at the bottom. Double-walled cartons, every seam taped, and nothing too heavy to lift comfortably. Packing sporting goods.
The four options
Courier for shoes, clothing, balls, rackets and small gear. Your own delivery locally, which works well for heavier items. Pickup for weights, benches and anything long. Buyer arranges for the biggest equipment.
When collection is the honest answer
For gym equipment, for long items you have not checked with a courier, and for anything where the postage would approach the price. Say so in the listing, because pickup terms are agreed before bidding with a collect-by window. How pickup works.
Combining wins
Clothing, balls and accessories combine. A bat combines with nothing. Combining is on by default and you set what each later win adds — set it thinking about the awkward item.
Questions people ask
Can I post a bat?
Usually, in a long box, at a price you checked first. Some services refuse the length.
Should I sell gym equipment collection-only?
For anything heavy, usually yes. It is a smaller room and an honest one.
Do I need to clean it first?
Yes. Nobody wants somebody else's season in a parcel.