So as long as you did not sign any letters/documents indicating that the "replacement of fittings/fixtures" are to be incorporated as a salient term in the formal tenancy agreement then you are fine, you may even get out of the negotiation without even paying a single cent simply because the parties cannot come to term for an agreement.

Just to clarify, the market practice is "to compensate only if there is breach", no one is obliged to pay anything if he/she has committed no breach at its part. Merely refunded the sum already paid would suffice.

Do not get coerced by unscrupulous agents who wanted to push the deal through just so that they could get their commission. If dispute arises, seek a legal counsel for advise.