Farfetch has a small collection of 60 cheap designer and vintage engagement rings from brands like De Beers, Mizuki, and White Bird that range in price from just $303 to $30,043 in gold, silver, and a variety of stones.
There's a lot of really nice and cheap engagement rings at Etsy. Currently, there's close to 40,000 different ones below $100 and 20,000 below $50. Using materials like silver, gold, white gold, rose gold, and diamonds.
Walmart is known for its low prices and a huge selection, so naturally, you can buy cheap engagement rings here. The cheapest ones start at less than $10. The cheapest personalized one costs $68.
Look for the category Jewelry & Engagement under Jewelry. You can find almost 300 engagement rings, about 300 women's wedding rings, and over 500 men's wedding rings priced at less than $50 here. The cheapest rings are under $10.