Question About Apmex

it really depends on what you want to spend money wise.
Silver rounds are OK, but they charge 2.50-3.00 over spot PER round.

The Morgan dollars that are GRADED are the best choice. If you spend 55.00 a piece on ms63 graded morgans, its a good price, considering most may NOT have been looked over for VAM's. Additionally grading servives are typically 10.00 or more apiece, and they are guaranteed authentic silver coins. Since they are graded it saves some cash.

Commemoratives are typically the lower priced coins, and can range in price. APMEX offers MS69 and PF69 Commemoratives for sale, between 30-35 bucks each.

As for bulk purchases, expect A LOT of DUPES, especially if you intend to buy Morgans or Peace dollars.

They also have a clearance section if you really don't know what you want, and may just impulse buy something.

Your question was pretty wide open, We have no idea what you collect, or wish to collect, other than it could be a silver purchase.

for 100 ounces of silver or more, go to Golden State Mint.

I have had very few problems with APMEX. They always seem to have relatively fair prices compared to most other places. I would suggest getting pre-33 gold from APMEX because you can get some pretty great prices. However, my father placed a sizable order with APMEX ($1,000+) and the box was PLACED IN THE MAILBOX. Luckily, LUCKILY, we live in a gated community... I would request from APMEX before you order, if it's a pricy order, to write on the box for you to have to sign for it.
They have a huge inventory with lots of great coins.
My first order from APMEX was several silver bars and coins and some PCGS Peace dollars in MS64. My next order was a MS69 Silver Eagle PCGS for $27 and some other slabs for the type set. I like fantasizing and adding hundreds of thousands of dollars worth of items in my cart and just... Imagining! (Don't judge
They have some HIGH grade Morgans, too... A MS-68, several 67's and tons of 66s. Highly suggested you buy from the APMEX site directly and not the ebay bullion center, simply because of better prices.