In antique shops, online auctions and small markets, you can find a lot of old things, sometimes interesting, sometimes not very much. Besides gramophones, icons, silverware and awards, people sell a lot of photographs. Sometimes you can see whole albums or boxes with antique photos. Often these are simple family photos, and if there are no famous people on them, then for most collectors such photos are of little value. The exceptions are photographs where Cossacks with awards and sabers, or other military people are captured. These photos can cost $ 50-100 or more, and regular photos, including vintage wedding photos, can be purchased very inexpensively. It all depends on where you buy. If this is a Moscow antique store, there will be one price. If you buy from a collector, the price may be completely different. And when you buy from the owner - the person who found them in your grandmother's closet or in the closet - the price can be quite low. You can buy a couple of albums with interesting photos for 500-1000 rubles.
By the way, buying and collecting photos can become an affordable hobby. Collecting is fun, but for example, collecting paintings or awards is not available to anyone. With antique and vintage photos, everything is much easier.
Having collected a large collection of vintage photos, you can select only the photos where are displayed vintage wedding dresses and publish your book - a photo album.