Gondola shelving is stronger and more versatile than most styles of retail store shelving.   It is durable, often outlasting the life of the retail business it services.
Gondola's durability lasts long into the secondhand market, and can outfit several stores during it's lifespan.

Many major brands, like Lozier or Madix, have 20 year old parts that can often be integrated into shelving that is manufactured today. 
This long life, backward compatibility and current availability of parts make buying used product a good way to save money, and allows some dealers to sustain  used product year-round.

Many closing retailers, especially chains and larger stores, will go through some form of store fixture liquidation process. Used retail shelving, in one form or another, is the backbone of the store fixture liquidation business.

Used shelving gets around, and used shelving is around.
Platinum color lozier gondola
No Loading Dock?
C-Store delivery?

You will usually need a loading dock or a forklift to unload the truck.

You can request  a liftgate and pallet jack, which can be a $50-$150 fee, or it can cause a whole shipment to require a more expesive carrier.

Get a quote needing a liftgate.  If it's alarger order, get another quote NOT needing a liftgate.  Then compare costs to forklift rental and delivery prices.

Does a neighbor have a forklift, or can you rent one cheap on the day you expect delivery?

You can NOT unload by hand.
Even just a few pallets.
The driver doesn't want to wait. 
Often the driver CANNOT wait.

Sometime you can bribe the driver to stay, but that's a big assumption.
Used Store Fixtures packed for shipping ltl
A couple tips to save money when you buy:

Any flexiblty on height, shelf and base deck size, color, brand and lead time.
Make sure your flexibilty is noted when talking tto dealers.

Get two or more quotes. Browse this site to find dealers and sales in your state and nearby states.
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This is actually too big of a question for my brain, but if you want to find out how wide your aisleways MUST be...
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