The most expensive model

MR. FRITH:I like this television very much. How much does it cost?
ASSISTANT:It's the most expensive model in the shop. It costs five hundred pounds.
MRS. FRITH:That's too expensive for us. We can't afford all that money.
ASSISTANT:This model's less expensive than that one. It's only three hundred pounds. But, of course, it's not as good as the expensive one.
MR. FRITH:I don't like this model. The other model's more expensive, but it's worth the money.
MR. FRITH:Can we buy it on instalments?
ASSISTANT:Of course. You can pay a deposit of thirty pounds, and then fourteen pounds a month for three years.
MR. FRITH:Do you like it, dear?
MRS. FRITH:I certainly do, but I don't like the price. You always want the best, but we can't afford it. Sometimes you think you're a millionaire!
MR. FRITH:Millionaires don't buy things on instalments!