The answer was actually in the question.
The Nursery in question was a
Wholesale/Retail Nursery. Nothing gets a customer more offside to see a plant priced at $4.50* and $6.50.* The owner will always be asked why 2 prices, which is understandable. For a little insight into the running of a Wholesale nursery, most sales are done either electronically or by the nursery taking a sample of their plants to the Retailer, who normally has a plant/price list from the Nursery. Now, while most Retailers know the Wholesaler does a bit of retail on the side, but can you imagine the responce should that Retailer visit the Wholesaler at his Nursery? And that happens from time to time as well. He walks in and sees the plant he sells in his outlet for $9.50, marked at $6.50 in your nursery. You have just lost a customer who may spend $100,000.00 or more a year with you.
Now look at you, the retail customer out looking for a bargain. You find a plant you like and it is priced at $4.50 and $6.50. You would want to know why you have to pay $2.00 more than the Retail customer who spends that $100,000.00 a year in the Nursery. You get annoyed with the Nursery owner and at best never return to that Nursery, at worse give him a mouthfull before you leave.
Inside tip for you whenever you visit a Wholesale Nursery. Make yourself know when you first enter the Nursery (there are some Wholesalers out there who dont want Retail sales) and simply ask the price of the plants in general. A lot of Nurseries price their plants by pot size, so a 100mm pot would be $2.75,* a 150mm $4.50* and a 200mm pot $9.75* and such. Obviously exotics attract a higher price tag. Also ask if there is any minimum sale for Wholesale prices (you might be suprised at how little you might have to buy to get the same price as the Garden Shop up the road.) And obviously none of the above applies to a Bonsai Nursery, where every plant is an individual.
Not all Nurseries are the same, but just asking questions right from the start might relieve most of the stress in the end. And remember, if you are looking for smooth paths, well signposted plant areas and/or a coffee shop - better you stick with a Garden Centre. Wholesale Nurseries are working areas.
* Prices are indicitive only and do not represent any known real prices
