Modern Coins vs. PCGS Price Guide

For this thread, modern coins include coins; no bullion or commemoratives. If you don't collect modern coins, please don't post anything negative... we already know you're better than everyone else! 
For Modern Coin Collectors:
What trends have you noticed when comparing prices paid vs. price guide when purchasing your modern coins? For me, I've averaged 68% for MS and 35% for PR coins for the years 1999 and 2000. The reason I ask, in my children's sets, prices have only gone down, none have gone up (none that I've noticed). When trying to add to their sets, they'll hear; these coins will only increase in value (yet, they offer them at 80% of guide). I know series plays a roll, but the coins we've purchased are all in the same range.
On the flip side, the type coins we purchase are in the 88-95% range. Is the modern coin market artificially inflated... in the market and on paper or is it just the paper that makes the market artificially inflated?

For Modern Coin Collectors:
What trends have you noticed when comparing prices paid vs. price guide when purchasing your modern coins? For me, I've averaged 68% for MS and 35% for PR coins for the years 1999 and 2000. The reason I ask, in my children's sets, prices have only gone down, none have gone up (none that I've noticed). When trying to add to their sets, they'll hear; these coins will only increase in value (yet, they offer them at 80% of guide). I know series plays a roll, but the coins we've purchased are all in the same range.
On the flip side, the type coins we purchase are in the 88-95% range. Is the modern coin market artificially inflated... in the market and on paper or is it just the paper that makes the market artificially inflated?
WANTED: Cincinnati Reds TEAM Cards
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For example here are the prices I have paid for proof coins vs guide:
69-S PR68DCAM 55/28.00
70-S PR68DCAM 50/22.00
73-S PR69DCAM 50/10.48
74-S PR69DCAM 42/7.10
75-S PR69DCAM 42/11.00
...
for 76-88, I paid between $4.69 and $9.93 for each of them in 69DCAM, with the majority in the $5.00 range.
All prices include shipping.
Price guide is not even in the ballpark.
It is hard to argue against quality, but I do consider the MS70 modern market to be over-inflated. Not to be critical of our hosts, or our friends across the street, evidence does suggest (see the discussion in the Jordan book) concerning the resubmission of 69s to eventually get 70s. Such a slight difference, in my opinion, is not worth the premiums charged.
The largest spreads I've encountered are with the 1999-S PR-70 Kennedy Clad ($800 guide/$150 actual) and the 1999-S PR-70 Lincoln Cent ($525/$99).
The other PR-70's I've purchased have been around 25-30% of guide.
<< <i>For this thread, modern coins include coins; no bullion or commemoratives. If you don't collect modern coins, please don't post anything negative... we already know you're better than everyone else!
For Modern Coin Collectors:
What trends have you noticed when comparing prices paid vs. price guide when purchasing your modern coins? For me, I've averaged 68% for MS and 35% for PR coins for the years 1999 and 2000. The reason I ask, in my children's sets, prices have only gone down, none have gone up (none that I've noticed). When trying to add to their sets, they'll hear; these coins will only increase in value (yet, they offer them at 80% of guide). I know series plays a roll, but the coins we've purchased are all in the same range.
On the flip side, the type coins we purchase are in the 88-95% range. Is the modern coin market artificially inflated... in the market and on paper or is it just the paper that makes the market artificially inflated? >>
I believe moderns are going to be a train wreck....... They are rare coins if you buy the coin not the holder.
and it sets us apart from practitioners and consultants. Gregor