Vintage vases are regularly available on eBay.com and Craigslist.com. Estate and yard sales are great places to find a variety of vintage vases. Thrift stores such as Goodwill and Salvation Army usually have a large selection of vases.
Antique stores and auctions often have vintage vases. Prices for vases can vary a lot based on age, rarity, maker and pattern. Etsy.com has an always changing selection of vases from many different sellers. Specific styles of vintage vases are harder to find than others. If you want a certain style of vase, you may want to place an ad to find what you want.
Replicas of vintage style vases are less expensive than originals and are available for purchase at Lunar Bazaar in many colors and shapes. Antiques.com has many listings for vases. Vintage pottery Facebook pages have vases for sale.
Flea markets are fantastic places to find vintage vases at bargain prices. Consignment and resell shops sometimes have nice vintage vases for sale. Sets on one large and one small vase can be hard to find but make a nice touch to any home or business. Pinterest.com/moreantiques/antique-vases-for-sale has a large selection of antique vases for sale from many different vendors.