Rajasthan shop keepers - advice

Just back from a month touring round West India. Came across the same cons in loads of places. (These might seem obvious but I got caught a couple of times).
Bought a miniature picture in Udaipur. Shopkeeper offered to wrap it carefully. Got home and found he had wrapped a different picture. Doh!
Ordered a bottle of wine in a restaurant and the bill charged 8 times the price for the bottle. They claimed that the price of wine on the menu was by glass. When I asked to see the menu I was shown a different menu.
Bought 3 shirts, got back to the hotel and found one had been switched for a different size.
Every taxi / tuk-tuk driver will tell you they don't have change. They expect you to round-up. Tell them you will have to get change in a shop and they will not get a tip and miraculously, they find their change.
When you barter hard for something there's a really good chance that it will be switched for something else.

One very effective bartering method I used was to wait for the opening offer (say 8,000 rupees) and state that I was so insulted that I would not be able to deal with the shopkeeper. As I walked out of the store the offer dropped considerably (to sat 3,000 Rupees). This saved the hassle of a prolonged barter.
It was always helpful to say that I had seen the same product somewhere else and I was going to go there instead.

In Kerala and Goa shopkeepers would start at just over double the price you would pay. So if they asked for 1,000 I would offer 300 and we would settle at 600.
In Rajasthan the opening prices were ridiculous. A carpet seller started at 120,000 rupees (£1,700) for a carpet worth about £200.

sorry to hear that. these are actualy the basic cons we too face them all the time, difference,we know that beforehand

It is a very sorry state of things in India when it comes to expats and result of corruption every where.

Yeah, those are the standard ripoff techniques. Stay clear of any place specifically targeting tourists, it's impossible to get a good deal there even if you negotiate hard. The markup on their initial asking price is often 1000% so even if you bargain it down to 1/3rd they still take you hard and in many cases the goods are crap anyway. The only solution is not to enter their game. Never had the wine bottle scam attempted on me though (but I only order wine at upmarket places and most of what's offered is so-so in quality anyway).

I only shop at official (not those claiming to be official) government emporia and regular shops such as Raymond for clothing. But granted, if you're a tourist it's hard to know.