The type of beds available and the price will vary depending on the seller.
The first step in finding any specific items is determine where to search. This can include one place or many to find the biggest selection.
Pick a style if a specific one is desired. If not, browsing through available selections can provide insight on the type that meets the needs at hand. It is also important to consider the materials used, the condition of the bed if bought secondhand, and the shipping if it is out of the area.
After finding a bed that sparks interest, do research. Compare it to other beds for sale to ensure the price is decent. Another tip is to research the bed itself to ensure it is indeed a true antique and not a replica or fake. After finding a desirable bed, talk to the seller. Check shipping prices and whether it needs special care, and ask specifics such as the dimensions, whether there is any defects and so forth.