I guess Less will be appropriate here. Less is generally used with uncountable nouns (exception - time, money and distance).
That leaves us with A, C and E

C -> Past Perfect Tense does not make any sense here
Between A and E -> I will go with E

Can anyone please confirm if OA provided by voodoo_child is correct? If yes, please provide the reasoning.

Less is for uncountable but price for example = 20$ or 30$... you can count and I also agree that simple past is enough.

I want to talk about the usage of personal pronoun vs indefinite pronoun
Advertisements also start like "You can buy colgate at 20% discount".. Can someone help me undertand the role of 'you' here

The three-pointed-star on the Mercedes bonnet can now be in your garage for a
much lesser price than you ever imagined.
A. lesser price than you ever imagined
B. lower price than you ever imagined
C. lesser price than you had ever imagined
D. lower price than one would have ever imagined
E. lesser price than you could ever have imagined

Here first thing we should know is Lesser vs Lower.....since price is countable use lower than lesser
this leaves us with options B and D.......Remember that usage of One....One...One Structure in a sentence...Since non underlined part has Your...We should use You instead of one...So,answer B...

Hope this clears Your Doubt HSPA.

voodoo_child wrote:The three-pointed-star on the Mercedes bonnet can now be in your garage for a
much lesser price than you ever imagined.
A. lesser price than you ever imagined
B. lower price than you ever imagined
C. lesser price than you had ever imagined
D. lower price than one would have ever imagined
E. lesser price than you could ever have imagined

Any thoughts WHY lower goes with price ? OA = B

We need to choose lower because of it modifies price which is countable.
Also we need to choose you, because your is mentioned in the non-underlined part. Also to maintain the simplicity go with ever imagined. So i feel option B is correct.

voodoo_child wrote:The three-pointed-star on the Mercedes bonnet can now be in your garage for a
much lesser price than you ever imagined.
A. lesser price than you ever imagined
B. lower price than you ever imagined
C. lesser price than you had ever imagined
D. lower price than one would have ever imagined
E. lesser price than you could ever have imagined

Any thoughts WHY lower goes with price ? OA = B

I got a PM asking me to reply to this question, so I'll add my input.

Here it is: the other posters have it dead on!

Even though price may seem to be non-countable, idiomatically we use "lower" and "higher" with price. Further, since we use "you" in the first part of the sentence, we need "you" in the second part as well.

Great job all.

Stuart Kovinsky wrote:

voodoo_child wrote:The three-pointed-star on the Mercedes bonnet can now be in your garage for a
much lesser price than you ever imagined.
A. lesser price than you ever imagined
B. lower price than you ever imagined
C. lesser price than you had ever imagined
D. lower price than one would have ever imagined
E. lesser price than you could ever have imagined

Any thoughts WHY lower goes with price ? OA = B

I got a PM asking me to reply to this question, so I'll add my input.

Here it is: the other posters have it dead on!

Even though price may seem to be non-countable, idiomatically we use "lower" and "higher" with price. Further, since we use "you" in the first part of the sentence, we need "you" in the second part as well.

Great job all.

Thanks for speedy response, Stuart. However, if I am not mistaken, we should use "less" for something plural esp. distance, time and quantity ? e.g. The red sweater is on sale for $10 less than original price.

I am confused [/u]

voodoo_child wrote:Thanks for speedy response, Stuart. However, if I am not mistaken, we should use "less" for something plural esp. distance, time and quantity ? e.g. The red sweater is on sale for $10 less than original price.

I am confused [/u]

When you compare costs, you use less. For example:

The sweater costs less than the pants.

When you compare the prices of two items, you use lower. For example:

The price of the sweater is lower than the price of the pants.

Remember, when it comes to idioms, the rules don't have to actually make sense - by definition, an idiom is correct simply "because it's correct". For the GMAT, memorize the idioms that your ear doesn't already recognize and don't worry about the ones that it does.