In relation to your other request this one might be a bit ¨easier¨ to rate although the estimate price on this one would be in a much wider range.
Problem here is that you´ve no pics of the actual item and as you might know condition is everything especially with those shields where stickers might´ve come loose a bit, have become damaged or whatever and all of this directly influences the price. What also had an effect on the pricing of these shields were the reproductions which were available a few years back, this made their value drop quite a bit but since than the market for the shields seems to have been recovering again slowly as your Ebay reference showed. It´s important to note that the one on Ebay is a so called Euro Shield which is one of the 6 shields that was only available in a few limited EU countries resulting in the fact they´re so hard to come by. The good news is that your Hustle Bear shield is one of those 6 as well which means he´s valuable, IF in good condition, but it is hard to compare the various EU shields with each other since some go for more while others go for only a fraction of that price. There are not a whole lot collectors out there who have a full EU shield set in their collection and you´ve to be lucky that those who´re working on completing one are just missing this Hustle Bear one, in that case you might get close to the $250-300 if you find the right collector and the shield itself is in good condition. On the other hand though there´s also a lot of collectors, including myself, who´ve a hard time spending those amounts on just a little piece of plastic with a sticker on it because solely based on the looks it might´ve as well been a Mac Donalds, Happy Meal, thing if you wouldn´t know the details. From that perspective spending those kind of amounts are hard to justify for most collectors.
Assuming the Shield is in good condition without issues and it is an original one, if it´s been in storage for years it most likely is but the pics will prove it, realistically you´re looking at a value of somewhere in the range of $150-300 for that shield at the moment. The estimate is so wide due to the fact that these shields don´t come by very often and those who changed owner over the last few years have gone for prices within that range. Based on the more recent Ebay listings it´s likely it should fetch around $200 at least but like mentioned it´ll mainly depend upon who´s interested in it.
Hope this helped as well 
BEASTFORMERS ビーストフォーマー
Collector & Founder of the Beastformers Blog

For more info about the Beastformers Archaeology (-BA-) Project please click HERE
In case you might not be able to contact The White Rabbit via LRG for whatever reason use the contact options on the Beastformers Blog