Increase in value should not be the primary goal in collecting, since writing instruments — similarly to wine, classic cars or watches — usually do not represent a reliable investment; one should buy primarily according to personal liking. Fountain pens are basically easier to resell than ballpoints or pencils. Anyone who nevertheless collects in a structured manner should first complete the fountain pen series and not put themselves under time pressure but rather observe the market and have patience. As a supplement, the Patron of Art editions with a quantity of 1,000 or 4,810 also come into question.