Patryn of Elvenshae
First Post
Reverse order, go! 
I derived it. Straight bonuses in D&D 3.X follow a predictable formula: bonus squared multiplied by a constant. We know the multipliers for competence bonuses to skills, so we know that a +5 comp. bonus to Jump is worth 2,500gp. We know, further, that secondary abilities have a 1.5x multiplier applied to them.
So, either the Jump bonus is secondary or the speed bonus is secondary. If the jump bonus is secondary, then it's price in the item is 2,500gp * 1.5 = 3,750gp. That means the speed bonus must have been worth 1,750gp to start with. 1,750gp, however, is less than 2,500gp, which tells us that the Jump bonus can't be secondary (Jump >= Speed => Jump Primary).
So, the Jump bonus is primary, leaving 3,000gp for the speed bonus. That's equal to 2,000gp times 1.5. Since it's a +10 bonus to speed, we calculate the constant at 20gp.
Actually, it doesn't. The boots are made at CL 3. A continous, 1 hour / level, 1st-level spell at CL 3 is priced at 1 * 3 * 2,000gp = 6,000gp. That's more than the boots are worth in total (not even accounting for the bonus to Jump checks).

Also, where did you get your formula for the speed enhancement? I've never seen it before.
I derived it. Straight bonuses in D&D 3.X follow a predictable formula: bonus squared multiplied by a constant. We know the multipliers for competence bonuses to skills, so we know that a +5 comp. bonus to Jump is worth 2,500gp. We know, further, that secondary abilities have a 1.5x multiplier applied to them.
So, either the Jump bonus is secondary or the speed bonus is secondary. If the jump bonus is secondary, then it's price in the item is 2,500gp * 1.5 = 3,750gp. That means the speed bonus must have been worth 1,750gp to start with. 1,750gp, however, is less than 2,500gp, which tells us that the Jump bonus can't be secondary (Jump >= Speed => Jump Primary).
So, the Jump bonus is primary, leaving 3,000gp for the speed bonus. That's equal to 2,000gp times 1.5. Since it's a +10 bonus to speed, we calculate the constant at 20gp.
Peter Gibbons said:How do you know they aren't priced as a continuous first-level spell? (Not so much challenging you as honestly wondering.) The pricing works out perfectly that way, and the effect is word-for-word the same as the spell in question.
Actually, it doesn't. The boots are made at CL 3. A continous, 1 hour / level, 1st-level spell at CL 3 is priced at 1 * 3 * 2,000gp = 6,000gp. That's more than the boots are worth in total (not even accounting for the bonus to Jump checks).