The start of a generic DOM filtering bookmarklet, along with sample code. Useful if a website's filters aren't specific enough. SEL is the selector for the main list item and COND is a filtering function that you can customize.

dom-filter.js

var PRINT = false;
var LOG = 1;

var SEL = ".pin";

var COND = function($node) {
	var ret = true;

	ret = checkNum($node, ".pinPrice", ">=", 10);
	if (!ret) { return false; }

	ret = checkNum($node, ".pinPrice", "<=", 15);
	if (!ret) { return false; }

	return true;
};

var firstNumberRegex = /^.*?(\d+(\.\d+)?)/;
var lastNumberRegex = /^.*?(\d+(\.\d+)?)[^0-9]*/;

var checkNum = function($object, selector, symbol, number) {
	return check($object, selector, lastNumberRegex, 1,
		function(val) {
			if (symbol == "<") {
				return parseFloat(val) < number;
			}
			else if (symbol == "<=") {
				return parseFloat(val) <= number;
			}
			else if (symbol == ">") {
				return parseFloat(val) > number;
			}
			else if (symbol == ">=") {
				return parseFloat(val) >= number;
			}
			else if (symbol == "==") {
				return parseFloat(val) == number;
			}
			else {
				return false;
			}
		});
};

var check = function($object, selector, regex, group, comparator) {
	var text = $object.find(selector).text().trim();

	if (text) {
		var reg = regex.exec(text);

		if (reg) {
			if (group) {
				reg = reg[group];
			}

			if (LOG >= 2) {
				console.log(text + " -> " + reg);
			}

			var result = comparator(reg);

			if (!result) {
				if (LOG >= 1) {
					console.log("COND FAIL FOR " + text);
				}

				return false;
			}
			else {
				return true;
			}
		}
		else {
			if (LOG >= 1) {
				console.log("NO REG FOR " + text);
			}

			return false;
		}
	}
	else {
		if (LOG >= 1) {
			console.log("NO " + selector);
		}

		return false;
	}
};

$(SEL).each(function(index) {
	if(!COND($(this))) {
		if (!PRINT) {
			$(this).remove();
		}
	}
});

I wrote this pretty much on autopilot, so I know parts of the code are really weird. (Don't judge me!) I'll fix later if need be.