Selling text link spots and putting a value to that particular link spot are indeed subjective. The value of your text link ad spot depends on placement, traffic, type, size, etc. Some advertisers place high value on Google PR and DMOZ listing; you may want to include these in your valuation.
To make my life easier, as a rule of thumb, I use TLA’s calculator located at:
http://www.text-link-ads.com/link_calculator.php
Also, you can cross check against LinkWorth’s:
http://www.linkworth.com/tools/price-quote.php
Do use these calculators as a guideline only and not to value your links solely based on what these calculators churn out. Always remember that advertisers will expect substantial discount for a long term advertising duration as well as multiple site advertisements. For returning customers, don’t forget to give them a discount too; they may actually list additional sites (happens to me).
Subscribe to: 





Hostgator Coupon Codes
Thinking about Using a PayPal “Donate” Button on Your Blog?
You’ve probably seen many sites on which webmasters try to increase their incomes by adding PayPal Donation buttons to their sidebar.
This is particularly true of programmers who give their software away for free – and ask only that you donate so that they may continue to improve their programs or create new ones.
There’s no problem with asking for money.