Nobody judges a price in a vacuum. '$50' means nothing on its own — it's expensive next to a $10 option and a bargain next to a $500 one. What you place beside your price quietly decides how that price feels.
Set the reference on purpose
Mention what the alternative costs — the agency that charges thousands, the hours it'd take to do yourself, the pricier tier above. Against a bigger number, yours reads as sensible. Leave the comparison out and the buyer supplies their own, which is rarely in your favour.
Keep it honest
An anchor works because it's a true, relevant comparison, not a fake crossed-out price. Buyers can smell a manufactured 'was $200, now $40'. Real context persuades; invented context just erodes trust.