There are 10,000-year-old arrowheads sold for that much or less. They're not scarce or sacred or anything; they're literally weapons that were made in mass quantities for warfare or hunting.
Well, the earliest ones that were not mass produced are valuable even though they aree the smallest step up from a rock. It is the later, well made ones that are extremely common because they were made and used for thousands of years that are not.
You can buy ancient Roman pottery fragments for much less than that.
Amphorae were the plastic bottles and shipping containers of the ancient world.
Their shards are found en masse in every archaeological dig.
If we are talking oldest, Romans are babies in the crib!
I second pottery shards - they are abundant and go back tens of thousands of years. Even if you wanted a "complete" item, potsherds were used for all types of purposes as complete tools, building materials, writing surfaces, etc.
Interestingly, there are so many whole amphorae because whenever there was an earthquake or eruption, people would put their amphorae under an arched window or doorway, as they were the strongest parts of their houses, and less likely to collapse onto their amphora full of food
You could get a handful of Roman coins for less than $5 if you don't care about the quality. Or this $96.94 silver Hadrian coin from approximately 117-138 CE
Roman coins is the first thing that came to mind. There's a ton of them out there and museums don't want any more either. You can get one for quite cheap.
I worked at auctions, being the offline 'online' buyer, so people could use me as an in person bidder for that online platform. I saw a 3500 800 ish year old tiny Aztec sculpture go for 260 euro, around 2015. I was like, do I need to call the cops? What is happening?
I worked in high end (food/event)service but my employer at the time had very diverse partnerships, one of them was offering this service and had the programmers themselves be present at the auctions too. But then they grew and couldn't fill all requests and we struck a partnership. I fit right in because of my above average IT knowledge in comparison with other service colleagues.
There's a ton of offline"-online" auction services now a day, live bidding whatever you call it. You could google a couple of them inform them of your interest.
The job itself was fun, so many objects I had never seen before! Very cool. It was also stressful, auctioning is live and sometimes the lot being auctioned off is worth a lot. Super fun to see your live-auction-system shit itself right in the middle of a 3 way bidding war
The arrowhead sounds more viable. The oldest ones can be thousands of years old, and the prices are all over the place. Fancy ones cost a fortune, while a badly beaten one will be well within the budget.
And the rest! Human mummies were ground up and used for a paint called "mummy brown". Artists only stopped using it because the supply of mummies dried up (lol).
You can buy single pages of old books/manuscripts on auction sites for that or even much less sometimes. Maybe not the oldest available, but it's the oldest thing I've ever bought. I have mine framed in the hall.